snowed in december. even the snowy mountains are seeing record low snowfall. colorado relies on the snowfall as a main resource. people there are taking matters into their own hands, literally trying to change the weather. cal perry is live from colorado. making snow, changing the weather, it sounds like the beginning of a marvel movie. reporter: your viewers will remember this is a continuation of the story we did at the colorado river this summer. we were standing on lake mead, and there was very little water. as you said, people are turning to an old method, cloud seeding, to try to get it to rain and snow more. this is a water crisis story. this is a climate story. we had a chance to talk to mike